I could widen you could widen he could widen we could widen you could widen they could widen
Forma con V-ing
I could be widening you could be widening he could be widening we could be widening you could be widening they could be widening
Perfecto
I could have widened you could have widened he could have widened we could have widened you could have widened they could have widened
Perfecto con V-ing
I could have been widening you could have been widening he could have been widening we could have been widening you could have been widening they could have been widening
Negación
Forma simple
I couldn't widen you couldn't widen he couldn't widen we couldn't widen you couldn't widen they couldn't widen
Forma con V-ing
I couldn't be widening you couldn't be widening he couldn't be widening we couldn't be widening you couldn't be widening they couldn't be widening
Perfecto
I couldn't have widened you couldn't have widened he couldn't have widened we couldn't have widened you couldn't have widened they couldn't have widened
Perfecto con V-ing
I couldn't have been widening you couldn't have been widening he couldn't have been widening we couldn't have been widening you couldn't have been widening they couldn't have been widening
Forma interrogativa
Forma simple
could I widen? could you widen? could he widen? could we widen? could you widen? could they widen?
Forma con V-ing
could I be widening? could you be widening? could he be widening? could we be widening? could you be widening? could they be widening?
Perfecto
could I have widened? could you have widened? could he have widened? could we have widened? could you have widened? could they have widened?
Perfecto con V-ing
could I have been widening? could you have been widening? could he have been widening? could we have been widening? could you have been widening? could they have been widening?
Forma interro-negativa
Forma simple
couldn't I widen? couldn't you widen? couldn't he widen? couldn't we widen? couldn't you widen? couldn't they widen?
Forma con V-ing
couldn't I be widening? couldn't you be widening? couldn't he be widening? couldn't we be widening? couldn't you be widening? couldn't they be widening?
Perfecto
couldn't I have widened? couldn't you have widened? couldn't he have widened? couldn't we have widened? couldn't you have widened? couldn't they have widened?
Perfecto con V-ing
couldn't I have been widening? couldn't you have been widening? couldn't he have been widening? couldn't we have been widening? couldn't you have been widening? couldn't they have been widening?